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-rw-r--r--fastiv-browser.c1069
1 files changed, 0 insertions, 1069 deletions
diff --git a/fastiv-browser.c b/fastiv-browser.c
deleted file mode 100644
index 78607ed..0000000
--- a/fastiv-browser.c
+++ /dev/null
@@ -1,1069 +0,0 @@
-//
-// fastiv-browser.c: fast image viewer - filesystem browser widget
-//
-// Copyright (c) 2021, Přemysl Eric Janouch <p@janouch.name>
-//
-// Permission to use, copy, modify, and/or distribute this software for any
-// purpose with or without fee is hereby granted.
-//
-// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
-// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
-// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
-// SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
-// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
-// OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
-// CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-//
-
-#include <math.h>
-#include <pixman.h>
-
-#include "fastiv-browser.h"
-#include "fastiv-io.h"
-#include "fastiv-view.h"
-
-// --- Widget ------------------------------------------------------------------
-// _________________________________
-// │ p a d d i n g
-// │ p ╭───────────────────╮ s ╭┄┄┄┄┄
-// │ a │ glow border ┊ │ p ┊
-// │ d │ ┄ ╔═══════════╗ ┄ │ a ┊
-// │ d │ ║ thumbnail ║ │ c ┊ ...
-// │ i │ ┄ ╚═══════════╝ ┄ │ i ┊
-// │ n │ ┊ glow border │ n ┊
-// │ g ╰───────────────────╯ g ╰┄┄┄┄┄
-// │ s p a c i n g
-// │ ╭┄┄┄┄┄┄┄┄┄┄┄┄╮ ╭┄┄┄┄┄┄┄┄┄┄┄┄
-//
-// The glow is actually a glowing margin, the border is rendered in two parts.
-//
-
-struct _FastivBrowser {
- GtkWidget parent_instance;
-
- FastivIoThumbnailSize item_size; ///< Thumbnail size
- int item_height; ///< Thumbnail height in pixels
- int item_spacing; ///< Space between items in pixels
-
- GArray *entries; ///< [Entry]
- GArray *layouted_rows; ///< [Row]
- int selected;
-
- GdkCursor *pointer; ///< Cached pointer cursor
- cairo_surface_t *glow; ///< CAIRO_FORMAT_A8 mask
- int item_border_x; ///< L/R .item margin + border
- int item_border_y; ///< T/B .item margin + border
-};
-
-typedef struct entry Entry;
-typedef struct item Item;
-typedef struct row Row;
-
-static const double g_permitted_width_multiplier = 2;
-
-// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-
-struct entry {
- char *uri; ///< GIO URI
- cairo_surface_t *thumbnail; ///< Prescaled thumbnail
- GIcon *icon; ///< If no thumbnail, use this icon
-};
-
-static void
-entry_free(Entry *self)
-{
- g_free(self->uri);
- g_clear_pointer(&self->thumbnail, cairo_surface_destroy);
- g_clear_object(&self->icon);
-}
-
-// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-
-struct item {
- const Entry *entry;
- int x_offset; ///< Offset within the row
-};
-
-struct row {
- Item *items; ///< Ends with a NULL entry
- int x_offset; ///< Start position outside borders
- int y_offset; ///< Start position inside borders
-};
-
-static void
-row_free(Row *self)
-{
- g_free(self->items);
-}
-
-// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-
-static void
-append_row(FastivBrowser *self, int *y, int x, GArray *items_array)
-{
- if (self->layouted_rows->len)
- *y += self->item_spacing;
-
- *y += self->item_border_y;
- g_array_append_val(self->layouted_rows, ((Row) {
- .items = g_array_steal(items_array, NULL),
- .x_offset = x,
- .y_offset = *y,
- }));
-
- // Not trying to pack them vertically, but this would be the place to do it.
- *y += self->item_height;
- *y += self->item_border_y;
-}
-
-static int
-relayout(FastivBrowser *self, int width)
-{
- GtkWidget *widget = GTK_WIDGET(self);
- GtkStyleContext *style = gtk_widget_get_style_context(widget);
-
- GtkBorder padding = {};
- gtk_style_context_get_padding(style, GTK_STATE_FLAG_NORMAL, &padding);
- int available_width = width - padding.left - padding.right;
-
- g_array_set_size(self->layouted_rows, 0);
-
- GArray *items = g_array_new(TRUE, TRUE, sizeof(Item));
- int x = 0, y = padding.top;
- for (guint i = 0; i < self->entries->len; i++) {
- const Entry *entry = &g_array_index(self->entries, Entry, i);
- if (!entry->thumbnail)
- continue;
-
- int width = cairo_image_surface_get_width(entry->thumbnail) +
- 2 * self->item_border_x;
- if (!items->len) {
- // Just insert it, whether or not there's any space.
- } else if (x + self->item_spacing + width <= available_width) {
- x += self->item_spacing;
- } else {
- append_row(self, &y,
- padding.left + MAX(0, available_width - x) / 2, items);
- x = 0;
- }
-
- g_array_append_val(items,
- ((Item) {.entry = entry, .x_offset = x + self->item_border_x}));
- x += width;
- }
- if (items->len) {
- append_row(self, &y,
- padding.left + MAX(0, available_width - x) / 2, items);
- }
-
- g_array_free(items, TRUE);
- return y + padding.bottom;
-}
-
-static void
-draw_outer_border(FastivBrowser *self, cairo_t *cr, int width, int height)
-{
- int offset_x = cairo_image_surface_get_width(self->glow);
- int offset_y = cairo_image_surface_get_height(self->glow);
- cairo_pattern_t *mask = cairo_pattern_create_for_surface(self->glow);
- cairo_matrix_t matrix;
-
- cairo_pattern_set_extend(mask, CAIRO_EXTEND_PAD);
- cairo_save(cr);
- cairo_translate(cr, -offset_x, -offset_y);
- cairo_rectangle(cr, 0, 0, offset_x + width, offset_y + height);
- cairo_clip(cr);
- cairo_mask(cr, mask);
- cairo_restore(cr);
- cairo_save(cr);
- cairo_translate(cr, width + offset_x, height + offset_y);
- cairo_rectangle(cr, 0, 0, -offset_x - width, -offset_y - height);
- cairo_clip(cr);
- cairo_scale(cr, -1, -1);
- cairo_mask(cr, mask);
- cairo_restore(cr);
-
- cairo_pattern_set_extend(mask, CAIRO_EXTEND_NONE);
- cairo_matrix_init_scale(&matrix, -1, 1);
- cairo_matrix_translate(&matrix, -width - offset_x, offset_y);
- cairo_pattern_set_matrix(mask, &matrix);
- cairo_mask(cr, mask);
- cairo_matrix_init_scale(&matrix, 1, -1);
- cairo_matrix_translate(&matrix, offset_x, -height - offset_y);
- cairo_pattern_set_matrix(mask, &matrix);
- cairo_mask(cr, mask);
-
- cairo_pattern_destroy(mask);
-}
-
-static GdkRectangle
-item_extents(FastivBrowser *self, const Item *item, const Row *row)
-{
- int width = cairo_image_surface_get_width(item->entry->thumbnail);
- int height = cairo_image_surface_get_height(item->entry->thumbnail);
- return (GdkRectangle) {
- .x = row->x_offset + item->x_offset,
- .y = row->y_offset + self->item_height - height,
- .width = width,
- .height = height,
- };
-}
-
-static const Entry *
-entry_at(FastivBrowser *self, int x, int y)
-{
- for (guint i = 0; i < self->layouted_rows->len; i++) {
- const Row *row = &g_array_index(self->layouted_rows, Row, i);
- for (Item *item = row->items; item->entry; item++) {
- GdkRectangle extents = item_extents(self, item, row);
- if (x >= extents.x &&
- y >= extents.y &&
- x <= extents.x + extents.width &&
- y <= extents.y + extents.height)
- return item->entry;
- }
- }
- return NULL;
-}
-
-static void
-draw_row(FastivBrowser *self, cairo_t *cr, const Row *row)
-{
- GtkStyleContext *style = gtk_widget_get_style_context(GTK_WIDGET(self));
- gtk_style_context_save(style);
- gtk_style_context_add_class(style, "item");
-
- GdkRGBA glow_color = {};
- GtkStateFlags state = gtk_style_context_get_state (style);
- gtk_style_context_get_color(style, state, &glow_color);
-
- GtkBorder border;
- gtk_style_context_get_border(style, state, &border);
- for (Item *item = row->items; item->entry; item++) {
- cairo_save(cr);
- GdkRectangle extents = item_extents(self, item, row);
- cairo_translate(cr, extents.x - border.left, extents.y - border.top);
-
- gtk_style_context_save(style);
- if (item->entry->icon) {
- gtk_style_context_add_class(style, "symbolic");
- } else {
- gdk_cairo_set_source_rgba(cr, &glow_color);
- draw_outer_border(self, cr,
- border.left + extents.width + border.right,
- border.top + extents.height + border.bottom);
- }
-
- gtk_render_background(
- style, cr, border.left, border.top, extents.width, extents.height);
-
- gtk_render_frame(style, cr, 0, 0,
- border.left + extents.width + border.right,
- border.top + extents.height + border.bottom);
-
- if (item->entry->icon) {
- GdkRGBA color = {};
- gtk_style_context_get_color(style, state, &color);
- gdk_cairo_set_source_rgba(cr, &color);
- cairo_mask_surface(
- cr, item->entry->thumbnail, border.left, border.top);
- } else {
- cairo_set_source_surface(
- cr, item->entry->thumbnail, border.left, border.top);
- cairo_paint(cr);
- }
-
- cairo_restore(cr);
- gtk_style_context_restore(style);
- }
- gtk_style_context_restore(style);
-}
-
-// --- Thumbnails --------------------------------------------------------------
-
-// NOTE: "It is important to note that when an image with an alpha channel is
-// scaled, linear encoded, pre-multiplied component values must be used!"
-static cairo_surface_t *
-rescale_thumbnail(cairo_surface_t *thumbnail, double row_height)
-{
- if (!thumbnail)
- return thumbnail;
-
- int width = cairo_image_surface_get_width(thumbnail);
- int height = cairo_image_surface_get_height(thumbnail);
-
- double scale_x = 1;
- double scale_y = 1;
- if (width > g_permitted_width_multiplier * height) {
- scale_x = g_permitted_width_multiplier * row_height / width;
- scale_y = round(scale_x * height) / height;
- } else {
- scale_y = row_height / height;
- scale_x = round(scale_y * width) / width;
- }
- if (scale_x == 1 && scale_y == 1)
- return thumbnail;
-
- int projected_width = round(scale_x * width);
- int projected_height = round(scale_y * height);
- cairo_surface_t *scaled = cairo_image_surface_create(
- CAIRO_FORMAT_ARGB32, projected_width, projected_height);
-
- // pixman can take gamma into account when scaling, unlike Cairo.
- struct pixman_f_transform xform_floating;
- struct pixman_transform xform;
-
- // PIXMAN_a8r8g8b8_sRGB can be used for gamma-correct results,
- // but it's an incredibly slow transformation
- pixman_format_code_t format = PIXMAN_a8r8g8b8;
-
- pixman_image_t *src = pixman_image_create_bits(format, width, height,
- (uint32_t *) cairo_image_surface_get_data(thumbnail),
- cairo_image_surface_get_stride(thumbnail));
- pixman_image_t *dest = pixman_image_create_bits(format,
- cairo_image_surface_get_width(scaled),
- cairo_image_surface_get_height(scaled),
- (uint32_t *) cairo_image_surface_get_data(scaled),
- cairo_image_surface_get_stride(scaled));
-
- pixman_f_transform_init_scale(&xform_floating, scale_x, scale_y);
- pixman_f_transform_invert(&xform_floating, &xform_floating);
- pixman_transform_from_pixman_f_transform(&xform, &xform_floating);
- pixman_image_set_transform(src, &xform);
- pixman_image_set_filter(src, PIXMAN_FILTER_BILINEAR, NULL, 0);
- pixman_image_set_repeat(src, PIXMAN_REPEAT_PAD);
-
- pixman_image_composite(PIXMAN_OP_SRC, src, NULL, dest, 0, 0, 0, 0, 0, 0,
- projected_width, projected_height);
- pixman_image_unref(src);
- pixman_image_unref(dest);
-
- cairo_surface_destroy(thumbnail);
- cairo_surface_mark_dirty(scaled);
- return scaled;
-}
-
-static void
-entry_add_thumbnail(gpointer data, gpointer user_data)
-{
- Entry *self = data;
- g_clear_object(&self->icon);
- g_clear_pointer(&self->thumbnail, cairo_surface_destroy);
-
- FastivBrowser *browser = FASTIV_BROWSER(user_data);
- GFile *file = g_file_new_for_uri(self->uri);
- self->thumbnail = rescale_thumbnail(
- fastiv_io_lookup_thumbnail(file, browser->item_size),
- browser->item_height);
- if (self->thumbnail)
- goto out;
-
- // Fall back to symbolic icons, though there's only so much we can do
- // in parallel--GTK+ isn't thread-safe.
- GFileInfo *info = g_file_query_info(file,
- G_FILE_ATTRIBUTE_STANDARD_NAME
- "," G_FILE_ATTRIBUTE_STANDARD_SYMBOLIC_ICON,
- G_FILE_QUERY_INFO_NONE, NULL, NULL);
- if (info) {
- GIcon *icon = g_file_info_get_symbolic_icon(info);
- if (icon)
- self->icon = g_object_ref(icon);
- g_object_unref(info);
- }
-out:
- g_object_unref(file);
-}
-
-static void
-materialize_icon(FastivBrowser *self, Entry *entry)
-{
- if (!entry->icon)
- return;
-
- // Fucker will still give us non-symbolic icons, no more playing nice.
- // TODO(p): Investigate a bit closer. We may want to abandon the idea
- // of using GLib to look up icons for us, derive a list from a guessed
- // MIME type, with "-symbolic" prefixes and fallbacks,
- // and use gtk_icon_theme_choose_icon() instead.
- // TODO(p): Make sure we have /some/ icon for every entry.
- // TODO(p): We might want to populate these on an as-needed basis.
- GtkIconInfo *icon_info = gtk_icon_theme_lookup_by_gicon(
- gtk_icon_theme_get_default(), entry->icon, self->item_height / 2,
- GTK_ICON_LOOKUP_FORCE_SYMBOLIC);
- if (!icon_info)
- return;
-
- // Bílá, bílá, bílá, bílá... komu by se nelíbí-lá...
- // We do not want any highlights, nor do we want to remember the style.
- const GdkRGBA white = {1, 1, 1, 1};
- GdkPixbuf *pixbuf = gtk_icon_info_load_symbolic(
- icon_info, &white, &white, &white, &white, NULL, NULL);
- if (pixbuf) {
- int outer_size = self->item_height;
- entry->thumbnail =
- cairo_image_surface_create(CAIRO_FORMAT_A8, outer_size, outer_size);
-
- // "Note that the resulting pixbuf may not be exactly this size;"
- // though GTK_ICON_LOOKUP_FORCE_SIZE is also an option.
- int x = (outer_size - gdk_pixbuf_get_width(pixbuf)) / 2;
- int y = (outer_size - gdk_pixbuf_get_height(pixbuf)) / 2;
-
- cairo_t *cr = cairo_create(entry->thumbnail);
- gdk_cairo_set_source_pixbuf(cr, pixbuf, x, y);
- cairo_paint(cr);
- cairo_destroy(cr);
-
- g_object_unref(pixbuf);
- }
- g_object_unref(icon_info);
-}
-
-static void
-reload_thumbnails(FastivBrowser *self)
-{
- GThreadPool *pool = g_thread_pool_new(
- entry_add_thumbnail, self, g_get_num_processors(), FALSE, NULL);
- for (guint i = 0; i < self->entries->len; i++)
- g_thread_pool_push(pool, &g_array_index(self->entries, Entry, i), NULL);
- g_thread_pool_free(pool, FALSE, TRUE);
-
- for (guint i = 0; i < self->entries->len; i++)
- materialize_icon(self, &g_array_index(self->entries, Entry, i));
-
- gtk_widget_queue_resize(GTK_WIDGET(self));
-}
-
-// --- Context menu-------------------------------------------------------------
-
-typedef struct _OpenContext {
- GWeakRef widget;
- GFile *file;
- char *content_type;
- GAppInfo *app_info;
-} OpenContext;
-
-static void
-open_context_notify(gpointer data, G_GNUC_UNUSED GClosure *closure)
-{
- OpenContext *self = data;
- g_weak_ref_clear(&self->widget);
- g_clear_object(&self->app_info);
- g_clear_object(&self->file);
- g_free(self->content_type);
- g_free(self);
-}
-
-static void
-open_context_launch(GtkWidget *widget, OpenContext *self)
-{
- GdkAppLaunchContext *context =
- gdk_display_get_app_launch_context(gtk_widget_get_display(widget));
- gdk_app_launch_context_set_screen(context, gtk_widget_get_screen(widget));
- gdk_app_launch_context_set_timestamp(context, gtk_get_current_event_time());
-
- // TODO(p): Display errors.
- GList *files = g_list_append(NULL, self->file);
- if (g_app_info_launch(
- self->app_info, files, G_APP_LAUNCH_CONTEXT(context), NULL)) {
- g_app_info_set_as_last_used_for_type(
- self->app_info, self->content_type, NULL);
- }
- g_list_free(files);
- g_object_unref(context);
-}
-
-static void
-append_opener(GtkWidget *menu, GAppInfo *opener, const OpenContext *template)
-{
- OpenContext *ctx = g_malloc0(sizeof *ctx);
- g_weak_ref_init(&ctx->widget, NULL);
- ctx->file = g_object_ref(template->file);
- ctx->content_type = g_strdup(template->content_type);
- ctx->app_info = opener;
-
- // It's documented that we can touch the child, if we want formatting:
- // https://docs.gtk.org/gtk3/class.MenuItem.html
- // XXX: Would g_app_info_get_display_name() be any better?
- gchar *name = g_strdup_printf("Open With %s", g_app_info_get_name(opener));
- GtkWidget *item = gtk_menu_item_new_with_label(name);
- g_free(name);
- g_signal_connect_data(item, "activate", G_CALLBACK(open_context_launch),
- ctx, open_context_notify, 0);
- gtk_menu_shell_append(GTK_MENU_SHELL(menu), item);
-}
-
-static void
-on_chooser_activate(GtkMenuItem *item, gpointer user_data)
-{
- OpenContext *ctx = user_data;
- GtkWindow *window = NULL;
- GtkWidget *widget = g_weak_ref_get(&ctx->widget);
- if (widget) {
- if (GTK_IS_WINDOW((widget = gtk_widget_get_toplevel(widget))))
- window = GTK_WINDOW(widget);
- }
-
- GtkWidget *dialog = gtk_app_chooser_dialog_new_for_content_type(window,
- GTK_DIALOG_DESTROY_WITH_PARENT | GTK_DIALOG_MODAL, ctx->content_type);
- if (gtk_dialog_run(GTK_DIALOG(dialog)) == GTK_RESPONSE_OK) {
- ctx->app_info = gtk_app_chooser_get_app_info(GTK_APP_CHOOSER(dialog));
- open_context_launch(GTK_WIDGET(item), ctx);
- }
- gtk_widget_destroy(dialog);
-}
-
-static gboolean
-destroy_widget_idle_source_func(GtkWidget *widget)
-{
- // The whole menu is deactivated /before/ any item is activated,
- // and a destroyed child item will not activate.
- gtk_widget_destroy(widget);
- return FALSE;
-}
-
-static void
-show_context_menu(GtkWidget *widget, const char *uri)
-{
- GFile *file = g_file_new_for_uri(uri);
- GFileInfo *info = g_file_query_info(file,
- G_FILE_ATTRIBUTE_STANDARD_NAME
- "," G_FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE,
- G_FILE_QUERY_INFO_NONE, NULL, NULL);
- if (!info) {
- g_object_unref(file);
- return;
- }
-
- // This will have no application pre-assigned, for use with GTK+'s dialog.
- OpenContext *ctx = g_malloc0(sizeof *ctx);
- g_weak_ref_init(&ctx->widget, widget);
- ctx->file = file;
- ctx->content_type = g_strdup(g_file_info_get_content_type(info));
- g_object_unref(info);
-
- GAppInfo *default_ =
- g_app_info_get_default_for_type(ctx->content_type, FALSE);
- GList *recommended = g_app_info_get_recommended_for_type(ctx->content_type);
- GList *fallback = g_app_info_get_fallback_for_type(ctx->content_type);
-
- GtkWidget *menu = gtk_menu_new();
- if (default_) {
- append_opener(menu, default_, ctx);
- gtk_menu_shell_append(
- GTK_MENU_SHELL(menu), gtk_separator_menu_item_new());
- }
-
- for (GList *iter = recommended; iter; iter = iter->next) {
- if (g_app_info_should_show(iter->data) &&
- (!default_ || !g_app_info_equal(iter->data, default_)))
- append_opener(menu, iter->data, ctx);
- else
- g_object_unref(iter->data);
- }
- if (recommended) {
- g_list_free(recommended);
- gtk_menu_shell_append(
- GTK_MENU_SHELL(menu), gtk_separator_menu_item_new());
- }
-
- for (GList *iter = fallback; iter; iter = iter->next) {
- if (g_app_info_should_show(iter->data) &&
- (!default_ || !g_app_info_equal(iter->data, default_)))
- append_opener(menu, iter->data, ctx);
- else
- g_object_unref(iter->data);
- }
- if (fallback) {
- g_list_free(fallback);
- gtk_menu_shell_append(
- GTK_MENU_SHELL(menu), gtk_separator_menu_item_new());
- }
-
- GtkWidget *item = gtk_menu_item_new_with_label("Open With...");
- g_signal_connect_data(item, "activate", G_CALLBACK(on_chooser_activate),
- ctx, open_context_notify, 0);
- gtk_menu_shell_append(GTK_MENU_SHELL(menu), item);
-
- // As per GTK+ 3 Common Questions, 1.5.
- g_object_ref_sink(menu);
- g_signal_connect_swapped(menu, "deactivate",
- G_CALLBACK(g_idle_add), destroy_widget_idle_source_func);
- g_signal_connect(menu, "destroy", G_CALLBACK(g_object_unref), NULL);
-
- gtk_widget_show_all(menu);
- gtk_menu_popup_at_pointer(GTK_MENU(menu), NULL);
-}
-
-// --- Boilerplate -------------------------------------------------------------
-
-// TODO(p): For proper navigation, we need to implement GtkScrollable.
-G_DEFINE_TYPE_EXTENDED(FastivBrowser, fastiv_browser, GTK_TYPE_WIDGET, 0,
- /* G_IMPLEMENT_INTERFACE(GTK_TYPE_SCROLLABLE,
- fastiv_browser_scrollable_init) */)
-
-enum {
- PROP_THUMBNAIL_SIZE = 1,
- N_PROPERTIES
-};
-
-static GParamSpec *browser_properties[N_PROPERTIES];
-
-enum {
- ITEM_ACTIVATED,
- LAST_SIGNAL,
-};
-
-// Globals are, sadly, the canonical way of storing signal numbers.
-static guint browser_signals[LAST_SIGNAL];
-
-static void
-fastiv_browser_finalize(GObject *gobject)
-{
- FastivBrowser *self = FASTIV_BROWSER(gobject);
- g_array_free(self->entries, TRUE);
- g_array_free(self->layouted_rows, TRUE);
- cairo_surface_destroy(self->glow);
- g_clear_object(&self->pointer);
-
- G_OBJECT_CLASS(fastiv_browser_parent_class)->finalize(gobject);
-}
-
-static void
-fastiv_browser_get_property(
- GObject *object, guint property_id, GValue *value, GParamSpec *pspec)
-{
- FastivBrowser *self = FASTIV_BROWSER(object);
- switch (property_id) {
- case PROP_THUMBNAIL_SIZE:
- g_value_set_enum(value, self->item_size);
- break;
- default:
- G_OBJECT_WARN_INVALID_PROPERTY_ID(object, property_id, pspec);
- }
-}
-
-static void
-set_item_size(FastivBrowser *self, FastivIoThumbnailSize size)
-{
- if (size < FASTIV_IO_THUMBNAIL_SIZE_MIN ||
- size > FASTIV_IO_THUMBNAIL_SIZE_MAX)
- return;
-
- if (size != self->item_size) {
- self->item_size = size;
- self->item_height = fastiv_io_thumbnail_sizes[self->item_size].size;
- reload_thumbnails(self);
-
- g_object_notify_by_pspec(
- G_OBJECT(self), browser_properties[PROP_THUMBNAIL_SIZE]);
- }
-}
-
-static void
-fastiv_browser_set_property(
- GObject *object, guint property_id, const GValue *value, GParamSpec *pspec)
-{
- FastivBrowser *self = FASTIV_BROWSER(object);
- switch (property_id) {
- case PROP_THUMBNAIL_SIZE:
- set_item_size(self, g_value_get_enum(value));
- break;
- default:
- G_OBJECT_WARN_INVALID_PROPERTY_ID(object, property_id, pspec);
- }
-}
-
-static GtkSizeRequestMode
-fastiv_browser_get_request_mode(G_GNUC_UNUSED GtkWidget *widget)
-{
- return GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH;
-}
-
-static void
-fastiv_browser_get_preferred_width(
- GtkWidget *widget, gint *minimum, gint *natural)
-{
- FastivBrowser *self = FASTIV_BROWSER(widget);
- GtkStyleContext *style = gtk_widget_get_style_context(widget);
-
- GtkBorder padding = {};
- gtk_style_context_get_padding(style, GTK_STATE_FLAG_NORMAL, &padding);
- *minimum = *natural =
- g_permitted_width_multiplier * self->item_height +
- padding.left + 2 * self->item_border_x + padding.right;
-}
-
-static void
-fastiv_browser_get_preferred_height_for_width(
- GtkWidget *widget, gint width, gint *minimum, gint *natural)
-{
- // XXX: This is rather ugly, the caller is only asking.
- *minimum = *natural = relayout(FASTIV_BROWSER(widget), width);
-}
-
-static void
-fastiv_browser_realize(GtkWidget *widget)
-{
- GtkAllocation allocation;
- gtk_widget_get_allocation(widget, &allocation);
-
- GdkWindowAttr attributes = {
- .window_type = GDK_WINDOW_CHILD,
- .x = allocation.x,
- .y = allocation.y,
- .width = allocation.width,
- .height = allocation.height,
-
- // Input-only would presumably also work (as in GtkPathBar, e.g.),
- // but it merely seems to involve more work.
- .wclass = GDK_INPUT_OUTPUT,
-
- .visual = gtk_widget_get_visual(widget),
- .event_mask = gtk_widget_get_events(widget) | GDK_KEY_PRESS_MASK |
- GDK_POINTER_MOTION_MASK | GDK_BUTTON_PRESS_MASK |
- GDK_SCROLL_MASK,
- };
-
- // We need this window to receive input events at all.
- // TODO(p): See if input events bubble up to parents.
- GdkWindow *window = gdk_window_new(gtk_widget_get_parent_window(widget),
- &attributes, GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL);
- gtk_widget_register_window(widget, window);
- gtk_widget_set_window(widget, window);
- gtk_widget_set_realized(widget, TRUE);
-
- FastivBrowser *self = FASTIV_BROWSER(widget);
- g_clear_object(&self->pointer);
- self->pointer =
- gdk_cursor_new_from_name(gdk_window_get_display(window), "pointer");
-}
-
-static void
-fastiv_browser_size_allocate(GtkWidget *widget, GtkAllocation *allocation)
-{
- GTK_WIDGET_CLASS(fastiv_browser_parent_class)
- ->size_allocate(widget, allocation);
-
- relayout(FASTIV_BROWSER(widget), allocation->width);
-}
-
-static gboolean
-fastiv_browser_draw(GtkWidget *widget, cairo_t *cr)
-{
- FastivBrowser *self = FASTIV_BROWSER(widget);
- if (!gtk_cairo_should_draw_window(cr, gtk_widget_get_window(widget)))
- return TRUE;
-
- GtkAllocation allocation;
- gtk_widget_get_allocation(widget, &allocation);
- gtk_render_background(gtk_widget_get_style_context(widget), cr, 0, 0,
- allocation.width, allocation.height);
-
- GdkRectangle clip = {};
- gboolean have_clip = gdk_cairo_get_clip_rectangle(cr, &clip);
-
- for (guint i = 0; i < self->layouted_rows->len; i++) {
- const Row *row = &g_array_index(self->layouted_rows, Row, i);
- GdkRectangle extents = {
- .x = 0,
- .y = row->y_offset - self->item_border_y,
- .width = allocation.width,
- .height = self->item_height + 2 * self->item_border_y,
- };
- if (!have_clip || gdk_rectangle_intersect(&clip, &extents, NULL))
- draw_row(self, cr, row);
- }
- return TRUE;
-}
-
-static gboolean
-open_entry(GtkWidget *self, const Entry *entry, gboolean new_window)
-{
- GFile *location = g_file_new_for_uri(entry->uri);
- g_signal_emit(self, browser_signals[ITEM_ACTIVATED], 0, location,
- new_window ? GTK_PLACES_OPEN_NEW_WINDOW : GTK_PLACES_OPEN_NORMAL);
- g_object_unref(location);
- return TRUE;
-}
-
-static gboolean
-fastiv_browser_button_press_event(GtkWidget *widget, GdkEventButton *event)
-{
- GTK_WIDGET_CLASS(fastiv_browser_parent_class)
- ->button_press_event(widget, event);
-
- FastivBrowser *self = FASTIV_BROWSER(widget);
- if (event->type != GDK_BUTTON_PRESS)
- return FALSE;
-
- guint state = event->state & gtk_accelerator_get_default_mod_mask();
- if (event->button == GDK_BUTTON_PRIMARY && state == 0 &&
- gtk_widget_get_focus_on_click(widget))
- gtk_widget_grab_focus(widget);
-
- const Entry *entry = entry_at(self, event->x, event->y);
- if (!entry)
- return FALSE;
-
- switch (event->button) {
- case GDK_BUTTON_PRIMARY:
- if (state == 0)
- return open_entry(widget, entry, FALSE);
- if (state == GDK_CONTROL_MASK)
- return open_entry(widget, entry, TRUE);
- return FALSE;
- case GDK_BUTTON_MIDDLE:
- if (state == 0)
- return open_entry(widget, entry, TRUE);
- return FALSE;
- case GDK_BUTTON_SECONDARY:
- // On X11, after closing the menu, the pointer otherwise remains,
- // no matter what its new location is.
- gdk_window_set_cursor(gtk_widget_get_window(widget), NULL);
- show_context_menu(widget, entry->uri);
- return TRUE;
- default:
- return FALSE;
- }
-}
-
-gboolean
-fastiv_browser_motion_notify_event(GtkWidget *widget, GdkEventMotion *event)
-{
- GTK_WIDGET_CLASS(fastiv_browser_parent_class)
- ->motion_notify_event(widget, event);
-
- FastivBrowser *self = FASTIV_BROWSER(widget);
- if (event->state != 0)
- return FALSE;
-
- const Entry *entry = entry_at(self, event->x, event->y);
- GdkWindow *window = gtk_widget_get_window(widget);
- gdk_window_set_cursor(window, entry ? self->pointer : NULL);
- return TRUE;
-}
-
-static gboolean
-fastiv_browser_scroll_event(GtkWidget *widget, GdkEventScroll *event)
-{
- FastivBrowser *self = FASTIV_BROWSER(widget);
- if ((event->state & gtk_accelerator_get_default_mod_mask()) !=
- GDK_CONTROL_MASK)
- return FALSE;
-
- switch (event->direction) {
- case GDK_SCROLL_UP:
- set_item_size(self, self->item_size + 1);
- return TRUE;
- case GDK_SCROLL_DOWN:
- set_item_size(self, self->item_size - 1);
- return TRUE;
- default:
- // For some reason, we can also get GDK_SCROLL_SMOOTH.
- // Left/right are good to steal from GtkScrolledWindow for consistency.
- return TRUE;
- }
-}
-
-static gboolean
-fastiv_browser_query_tooltip(GtkWidget *widget, gint x, gint y,
- G_GNUC_UNUSED gboolean keyboard_tooltip, GtkTooltip *tooltip)
-{
- FastivBrowser *self = FASTIV_BROWSER(widget);
- const Entry *entry = entry_at(self, x, y);
- if (!entry)
- return FALSE;
-
- GFile *file = g_file_new_for_uri(entry->uri);
- GFileInfo *info = g_file_query_info(file,
- G_FILE_ATTRIBUTE_STANDARD_NAME
- "," G_FILE_ATTRIBUTE_STANDARD_DISPLAY_NAME,
- G_FILE_QUERY_INFO_NONE, NULL, NULL);
- g_object_unref(file);
- if (!info)
- return FALSE;
-
- gtk_tooltip_set_text(tooltip, g_file_info_get_display_name(info));
- g_object_unref(info);
- return TRUE;
-}
-
-static void
-fastiv_browser_style_updated(GtkWidget *widget)
-{
- GTK_WIDGET_CLASS(fastiv_browser_parent_class)->style_updated(widget);
-
- FastivBrowser *self = FASTIV_BROWSER(widget);
- GtkStyleContext *style = gtk_widget_get_style_context(widget);
- GtkBorder border = {}, margin = {};
-
- int item_spacing = self->item_spacing;
- gtk_widget_style_get(widget, "spacing", &self->item_spacing, NULL);
- if (item_spacing != self->item_spacing)
- gtk_widget_queue_resize(widget);
-
- // Using a pseudo-class, because GTK+ regions are deprecated.
- gtk_style_context_save(style);
- gtk_style_context_add_class(style, "item");
- gtk_style_context_get_margin(style, GTK_STATE_FLAG_NORMAL, &margin);
- gtk_style_context_get_border(style, GTK_STATE_FLAG_NORMAL, &border);
- gtk_style_context_restore(style);
-
- const int glow_w = (margin.left + margin.right) / 2;
- const int glow_h = (margin.top + margin.bottom) / 2;
-
- // Don't set different opposing sides, it will misrender, your problem.
- // When the style of the class changes, this virtual method isn't invoked,
- // so the update check is mildly pointless.
- int item_border_x = glow_w + (border.left + border.right) / 2;
- int item_border_y = glow_h + (border.top + border.bottom) / 2;
- if (item_border_x != self->item_border_x ||
- item_border_y != self->item_border_y) {
- self->item_border_x = item_border_x;
- self->item_border_y = item_border_y;
- gtk_widget_queue_resize(widget);
- }
-
- if (self->glow)
- cairo_surface_destroy(self->glow);
- if (glow_w <= 0 || glow_h <= 0) {
- self->glow = cairo_image_surface_create(CAIRO_FORMAT_A1, 0, 0);
- return;
- }
-
- self->glow =
- cairo_image_surface_create(CAIRO_FORMAT_A8, glow_w, glow_h);
- unsigned char *data = cairo_image_surface_get_data(self->glow);
- int stride = cairo_image_surface_get_stride(self->glow);
-
- // Smooth out the curve, so that the edge of the glow isn't too jarring.
- const double fade_factor = 1.5;
-
- const int x_max = glow_w - 1;
- const int y_max = glow_h - 1;
- const double x_scale = 1. / MAX(1, x_max);
- const double y_scale = 1. / MAX(1, y_max);
- for (int y = 0; y <= y_max; y++)
- for (int x = 0; x <= x_max; x++) {
- const double xn = x_scale * (x_max - x);
- const double yn = y_scale * (y_max - y);
- double v = MIN(sqrt(xn * xn + yn * yn), 1);
- data[y * stride + x] = round(pow(1 - v, fade_factor) * 255);
- }
- cairo_surface_mark_dirty(self->glow);
-}
-
-static void
-fastiv_browser_class_init(FastivBrowserClass *klass)
-{
- GObjectClass *object_class = G_OBJECT_CLASS(klass);
- object_class->finalize = fastiv_browser_finalize;
- object_class->get_property = fastiv_browser_get_property;
- object_class->set_property = fastiv_browser_set_property;
-
- browser_properties[PROP_THUMBNAIL_SIZE] = g_param_spec_enum(
- "thumbnail-size", "Thumbnail size", "The thumbnail height to use",
- FASTIV_TYPE_IO_THUMBNAIL_SIZE, FASTIV_IO_THUMBNAIL_SIZE_NORMAL,
- G_PARAM_READWRITE);
- g_object_class_install_properties(
- object_class, N_PROPERTIES, browser_properties);
-
- browser_signals[ITEM_ACTIVATED] = g_signal_new("item-activated",
- G_TYPE_FROM_CLASS(klass), 0, 0, NULL, NULL, NULL,
- G_TYPE_NONE, 2, G_TYPE_FILE, GTK_TYPE_PLACES_OPEN_FLAGS);
-
- GtkWidgetClass *widget_class = GTK_WIDGET_CLASS(klass);
- widget_class->get_request_mode = fastiv_browser_get_request_mode;
- widget_class->get_preferred_width = fastiv_browser_get_preferred_width;
- widget_class->get_preferred_height_for_width =
- fastiv_browser_get_preferred_height_for_width;
- widget_class->realize = fastiv_browser_realize;
- widget_class->draw = fastiv_browser_draw;
- widget_class->size_allocate = fastiv_browser_size_allocate;
- widget_class->button_press_event = fastiv_browser_button_press_event;
- widget_class->motion_notify_event = fastiv_browser_motion_notify_event;
- widget_class->scroll_event = fastiv_browser_scroll_event;
- widget_class->query_tooltip = fastiv_browser_query_tooltip;
- widget_class->style_updated = fastiv_browser_style_updated;
-
- // Could be split to also-idiomatic row-spacing/column-spacing properties.
- // The GParamSpec is sinked by this call.
- gtk_widget_class_install_style_property(widget_class,
- g_param_spec_int("spacing", "Spacing", "Space between items",
- 0, G_MAXINT, 1, G_PARAM_READWRITE));
-
- // TODO(p): Later override "screen_changed", recreate Pango layouts there,
- // if we get to have any, or otherwise reflect DPI changes.
- gtk_widget_class_set_css_name(widget_class, "fastiv-browser");
-}
-
-static void
-fastiv_browser_init(FastivBrowser *self)
-{
- gtk_widget_set_can_focus(GTK_WIDGET(self), TRUE);
- gtk_widget_set_has_tooltip(GTK_WIDGET(self), TRUE);
-
- self->entries = g_array_new(FALSE, TRUE, sizeof(Entry));
- g_array_set_clear_func(self->entries, (GDestroyNotify) entry_free);
- self->layouted_rows = g_array_new(FALSE, TRUE, sizeof(Row));
- g_array_set_clear_func(self->layouted_rows, (GDestroyNotify) row_free);
-
- set_item_size(self, FASTIV_IO_THUMBNAIL_SIZE_NORMAL);
- self->selected = -1;
- self->glow = cairo_image_surface_create(CAIRO_FORMAT_A1, 0, 0);
-
- g_signal_connect_swapped(gtk_settings_get_default(),
- "notify::gtk-icon-theme-name", G_CALLBACK(reload_thumbnails), self);
-}
-
-// --- Public interface --------------------------------------------------------
-
-static gint
-entry_compare(gconstpointer a, gconstpointer b)
-{
- const Entry *entry1 = a;
- const Entry *entry2 = b;
- GFile *location1 = g_file_new_for_uri(entry1->uri);
- GFile *location2 = g_file_new_for_uri(entry2->uri);
- gint result = fastiv_io_filecmp(location1, location2);
- g_object_unref(location1);
- g_object_unref(location2);
- return result;
-}
-
-void
-fastiv_browser_load(
- FastivBrowser *self, FastivBrowserFilterCallback cb, const char *path)
-{
- g_array_set_size(self->entries, 0);
- g_array_set_size(self->layouted_rows, 0);
-
- GFile *file = g_file_new_for_path(path);
- GFileEnumerator *enumerator = g_file_enumerate_children(file,
- G_FILE_ATTRIBUTE_STANDARD_NAME "," G_FILE_ATTRIBUTE_STANDARD_TYPE,
- G_FILE_QUERY_INFO_NONE, NULL, NULL);
- g_object_unref(file);
- if (!enumerator)
- return;
-
- while (TRUE) {
- GFileInfo *info = NULL;
- GFile *child = NULL;
- if (!g_file_enumerator_iterate(enumerator, &info, &child, NULL, NULL) ||
- !info)
- break;
- if (g_file_info_get_file_type(info) == G_FILE_TYPE_DIRECTORY)
- continue;
- if (cb && !cb(g_file_info_get_name(info)))
- continue;
-
- g_array_append_val(self->entries,
- ((Entry) {.thumbnail = NULL, .uri = g_file_get_uri(child)}));
- }
- g_object_unref(enumerator);
-
- // TODO(p): Support being passed a sort function.
- g_array_sort(self->entries, entry_compare);
-
- reload_thumbnails(self);
-}